Improvement in cooking-stoves



` C. .H-.l BUCK.

l Stove *Doon Patented Oct. 8. 1867.

oool=looo OOOOOO 1 N. PETERS, PMOTOLITHOGRAFHER, WASHlNGTDN1 D C.

@uiten tetra atmt @fitta CHARLES H. BUCK, OF ST. LOUIS, MISSOURI.

I Letters Patent No. 69,536, dated October 8, 1867.

IMPROVEMENT IN COOKING-STOVES.

TO .ALL WHOM IT MAY CONCERN:

Beit known that I, CHARLES H. BUCK, of St. Louis, in the county of St.Louis, and State of Missouri, have invented an Improvement in'Cooking-Stoves; and I do hereby declare the following to be a full,clear, and exact description thereof, reference being had tc theaccompanying drawings, making part of this specili- 'cation, in which-Figure is a vertical section taken longitudinally through the centre ofmy improved stove.

Figure2 is a bottom view of the chamber'ed bridge-plate.

Figure'is a sectional view of one of the oven-deors. Y

Similar letters of reference indicate corresponding parts in theseveraliigures.

This invention relates to cer-tain improvements on cooking-stoves whichare constructed with a {ire-chamber arranged over the fron-t part of theoven, with provision for conducting the heated products of combustionaround the oven, and distributing the heat uniformly over the same.

The nature of my invention consists in having avdouble-wall fire-backbetween the {ire-chamber and oven,l

between the walls of which air is admitted through the sides of thestove, aud conducted up into a chambered bridge-plate, where the air isdischarged through small apertures into the exit throat of thelire-chamber, and

caused to mixwith the rising gases, and eiiects the combustion thereof,as will behereinafter described. It

lalso consists in a novel mode of applying glass to the stove-doors, forthe vpurpose ofv exposing to view articles which areput into the oven ofthe stove, without having to open the doors for this purpose, as will beherein after described.

. To. enable others skilled in the art to understand my invention I willdescribe itsconstruction and operation. In the accompanying drawings, Arepresents the oven of the stove, which is surrounded on four sides withdouble walls, forming ue-chambers for the passage of the products ofcombustion over, behind, and beneath this oven, when the damper a isclosed, as shown in iig. 1. When this damper a is open the products ofcombastion from the lire-chamber pass directly from the fire-chamber Bover the top of the oven, and escape from tho steve through theexit b.`The manner of conducting the products of combustion beneath the oven isby the employment of partitions, so as to form two side passages leadingfrom the space above the oven downward and forward on each Side of acentral liuc, which latter is closed by the damper a applied at theupper end of said central space.` This form of stove, and thearrangement of dues above described, are well known, andV need not bemore particularly described in this specification. The "tire-chamber Bis arranged over the front part ofthe oven A, and it is provided with adouble-wall ire-backconslisting of a tire wall, c, and an oven wall, d,extending out to th side plates of the stove, and enclosing anair-heating-and circulating space, e, into which air is allowed toenterfreely through the openings ff through the side plates ofthe stove.The top of this chamber is closed, except at one point, which is in themiddle of the width of the stove, and which forms a communica-4 tion forthe upward passage of airfrom said chamber into a chamber, g, which isconstructed by the application of a thickly perforated plate, D, uponthe bottom of the bridge-plate D, shown in figs. 1 and 2. The chamber gextends laterally outward from the central inlet aperture, and'occupiesa space nearly equal to the width of the stove, so as to freelydistribute air through its perforated bottom plate and into theexit-throat of the tirechamber, and thereby produce a more perfectcombustion of the gases rising from said chamber, by supplying them withlarge quantities of oxygen. The air is drawn into the chamber e, betweenthe walls c d, by the common draught of the stove,4 when it is exposedto the highly heated surface of the front plate c, from which it willabstract considerable heat. This heated air the'n rises through thecentrai opening of the chamber e and enters chamber g, from which it isdistributed into the exit-throat of the fire-chamber in numerous smalllstreams or jets, as above stated. By thus admitting fresh air into thechamber e I not only heat this air beforeit is conducted into vthe{ire-chamber, but I` reduce thetemperatur of the fire-exposed plate c tosuch a degree that this plate will not readily -burn out. Thestove-doors G, which are applied for closing the oven, nre constructedwith large holes through their `centres, 'as shown in figs. 1 and 3,adapted for receivingglass plates J, and having these plates secured tothe doors so asto form 'windows for admitting light int'o the oven A.The glass plates J are made of a concavo-convex form,v as shown in iig.3, and they are secured in place so that they will -not be liable to bebroken by the 'expansion and contraction of the metal due to theextremes of heat and cold to 'which both the glass and the metal areexposed. This is eected by bevelling the edge a of the hole which isthrough 'the door G, so as to receive the edge of plate J, and employingo ring. l1, which is adopted to cover that portion of the plate J whichtouches said door. The ring z is secured in place by means of screws,which :1re intended merely as holding-screws for the ring, and not forclamping the plate J. The convex plate serves two important purposes: itallows a person to see objects within the oven without opening the doorsthereof', ond it will expose such objects to view in s. better mannerthan o. flut piste would.

I am aware that flat plete window-glass has been employed in the doorsof cooking-stoves and other varieties ol stoves, :ind I do not desire toclaim broadly the application of glass to stove-doors. Flat glass platesare liable to be broken by pans and other objects in the oven strikingthem when the stove-door or doors :1re suddenl)T shut. Theconcave-convex gloss windows are not liable to be broken from suchcause.

Hoving described my invention, what I claim ns new, and desire to secureby Letters Patent, is-n Providing the Adoors of stoves withconcovo-convex gloss windows, secured within flaring openings throughthe stove-doors by means ot' rings 7L, substantially as described.

CHA S. H. BUCK.

Witnesses:

JOHN B. GERARD, H. J. Bernisse-mr.

